Carbonating apparatus.



E. E.' MURPHY.

CARBONATING APPARATUS.

APPLICATION FILED IEB.1,1912` 1,055,648. Patented 1113111111913.

2 SHEETS-SHEET 1.

P.. E. MURPHY.

GARBONATING APPARATUS. lAPPLIQATION FILED 2313.1, 1912.

Patented Mar. 11,1913.

'2 SHEETS-SHEET 2.

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A utilizing the weight of the'tank to control EDWARD E. MURPHY, WINCHESTER, MASSACHUSETTS.

l CARBONATINGQPPARATUS.

i To all whoml it may concern: n

.Be it known that I, EDWARD E. MURPHY, a citizen of the United States, and resident of Winchester, in the county of Middlesex D and State of Massachusetts, have invented certa-inl new and useful Improvements in Carbonating Apparatus, of which, the following is a specification. f i The object of the present invention is to provide an apparatus for furnishing a con.- Atinuous supply of carbonated water. v The apparatus comprises a tank or `airtight receptacle, a pump for pumpingwater. into t-he receptacle, means controlled by the weight of the receptacle for rendering the `pump yoperative and inoperative, and means within the receptacle'for delivering carbon dioxid under-pressure andfor thoroughly mixing the same with water.

Of they accompanying drawings, which illustrate one form in which the invention may be embodied: Figure 1 represents a sidev elevation, partly in section. Fig. 2 represents la vertical section through the pipes and other fittings at the top of the mixing tank. Fig.- 3 represents an elevation of the same fittings from the side, indicated by line`3-3 of Fig. 1. Fig. 4 represents an elevation of the motor-controllin means as viewed from right to left with reference to Fig. 1.

. The same reference characters indicate the same. parts wherever they occur.

Referring. first to Fig. 1, a tank indicated ,at'10`provides' a chamber into which water and carbon dioxid are forced under pressure and in which theyl are mixed. l'l`hewater ypum is indicated at 11,; and a motor for A driving the same is indicated at 12. Water is conducted to the pump by a supply pipe 13 which is provided with a check valve 14 for preventing flow away fromy the pump. The pump forces the water through apipe 15 which deliv'ers'into thetank 10. The pump illustrated is of the double-acting type,'a nd the pipe 15 isprovided with two check valves, indicated respectively at 16 and'l". All the elements thus far indicated, and others hereinafter described, are mounted upon a movable support indicated at 17. This support is provided for the purpose'of the vmotor which operates the water pump. Themethod of control is as follows: When the supply o f carbonated water in the tank Specification of Letters Patent.

vis reduced to aV predetermined point, the' Patented Ma.11,191'3.

Appncation inea rebruar 1, 1912. serial No. 674,783.'

vmovable support 17 is automatically raised by a supporting spring and an electric switch 1s operated by the upward movement of the i i.

support to turn-onthe power bywhich the motor 1s operated. AThe pufnp ist-hus set in motion and the quantity of water inthe tank is increased until the weight of the tank de- I presses they :support 17. The ldownward movement of the support is utilizedto turn off the power by which the motor is operated, thus automatically furnishing a sup-,V

ply of wate'r.v `The minimum and'maximum supply in the tank may be variedV byregulating devices hereinafter described. A'cfl cording to this lembodiment of the invention,

one end ofthe movable support 17 is pivotally mountedfupon 2a pivotl member 18 whichis supported by a base 19. The loppotically movable plunger 20 which is ysubject to upward force exerted by a compression spring 21'. The support 17 is formed with a suitable platform for the motor and with Lsite end of the support 17 is seated in a versuitable provisions for supporting the pump v and for supporting gears for driving the pump. The pump and motor are preferably arranged at the end nearer the pivot 18 so that they will be subject tocomparatively little movement. The tank 10 -is preferably disposed as far as possible from the pivot 18, so that its weight may be .used to good advantage. The supportis formed with a ring-shaped portion 17 adapted to surround the tank and to engage a shoulder 10c on thel exterior of the tank, whereby the tank is held from slipping ythrough the ring-shaped portion. The tank may be quickly inserted and removed, andy requires no means for holding it in place. v

The piston plunger or rod of the pump is indicated at 22'. The mechanism for' transmitting motion from the motor to the plun ger 22 comprises a ear 23 on rthe motor shaft 24, a gear'25 riven'by the gear 23,

agear 26 compounded with the gear 25, a 1

slide verticallyin a bearing 32 aorded by thebase 19. The plunger is formed with ash'oulder20x which is adapted. to rest upon the upper end of the bearing when the y lowest position.

plunger is depressed. The upper end of the plunger is provided with a head 33 and is surrounded by the compression spring 21, before mentioned. The spring and head are ihclosed in a barrel 34 whose upper end is closed by'a cap 34". The lower end ofthe barrel is screw-threaded' in a bracket19x. which extends upwardlyfrom the base 19. A check nut 35 is' :threaded-on the barrel and is adapted to clamp the barrel with relation to the bracket. The lower end of the barrel ils/formed to provide a bearing 36 for the plunger and to provide a seat for the lower end of the rspring 21. By screwing* the barrel up or down, the spring 21, an consequently the plunger, may be raised or lowered. If the barrel be in a relatively high position, a relatively great quantity of water will be required .in the tank to ...depress the plunger until its shoulder 2()X rests upon the bearing 32. On the other hand, if the barrel be in a relatively low position, a small quantity of water in the tank will be suicient to depress the plunger to the same position. `This is a' question of whether i spring 21 will have to be compressed little or much in order to move the plunger to its The lower end of the plunger extends below thebearing 32 and is screw-threadedl to receive a nut 37 whereby the upward movement' of the plunger mayv be limited. A check nut 37x is provided for fixing the position of the nut 37.

The movement of they plunger, as limited by the shoulder 20X and the nut 37, is utilized to control the power by which the motor is operated. Fig. 4 4illustrates an electric switch, which is indicated -at 38 and shown as being affixed to the bracket 19". One of the wires fromr the motor, for exam'- ple wire extends to the switch, The other wire from the motor may be connected with a source of energy, and the return wire for connecting the switch with the source of energy is indicated at m2. Any suitable switch may be used for the purpose of the present invention, and it will not be necessary to illustrate any switch in detail. It will be suiiicient to illustrate .in a general Way how 'the movement of the plunger 20 is transmitted to a movable element of the switch. A pin 89 is aflixed to the plunger and extends laterally, as shown by Fig. '4. A rod'40 extends vertically through the pin 39 and is secured to the pin by nuts 41 and 42. This rod carries a yoke 43 which exvsecured-in the top of the tank.

nettoie a' vertically movable plunger 38X which ex- `tends throughthe switch.v The screw 44 is adaptedto be set tightly against the upper end of the plunger 38X. The-element 38* is `the movable element of the switch whereby a circuit is closed when itis moved upwardly, and is opened when it is downwardly. The nutf37 provides for limiting the rangeof movement of the plunger 20.120 meet the requirements of the switch 38. The pipe 15 by which Water is conducted from the pump to the tank 10 is connected` by. a suitable union to a fitting 45 tightly This fitting is formed for the attachment of two other pipes, one ofwhich is for conducting carbon dioxid to the tank, and the other of which isA for conducting carbonated water to asuitable point of discharge.

The inlet pipe for the carbon dioxid is indicated at 46, and-the outlet pipe for the carbonated water is indicated at 47. A check valvev48 is placed in the pipe 46 so as to open; toward the tank. A shut-oli" valve 49 is provided in the outlet pipe 47. A port 46x is formed in the fitting 45 to conduct the carbon dioxid to a pipe v50 which extends downwardly in the tank. The fitting 'is provided with a port 47* which forms communication between the discharge pipe 47 and a second pipellextending verticallyin the tank. The pipe 50 extends inwardly to the bottom of the tank and terminates 1n a coil 50x. In this coil the pipe is provided with a number of small discharge openings 50a. The carbon dioxid, being delivered into the tank :under pressure of 140 ounds to the square inch, for example, 1s discharged through the openings 5()a in fine jets, and, being lighter than water, rises. A considerable proportion of it is absorbed by the water while it is rising through the water. The lower end of the ipe 50 is preferably closed sothat the car on dioxid will escape only through the tine openings 50a.

The water passing from the pump into the tank is delivered through a pipe52. The lower end of the pipe is closed, but the pipe is provided with numerous small discharge openings 52a which arepreferably arranged in groups of which the uppermost is slightly above the maximum water level at W. The pipe 52 is connected tol an upper pipe section 53 by means of a coupling 54. This coupling is provided with a nozzle .55 Whose bore is extremely small and adapted to direct a fine stream centrally and at high velocity through the pipe 52. The stream from the nozzle exerts a downward pull on oved thecarbon dioxid which accumulates above the water, and carries it into the water for a; As previously ex--v plained, the pump is Voperated only when considerable distance.

the water level is rising fromVminimum to maxlmum, and the carbon dloxid 1s dellvered under 'suitablepressur e, whichfor` the "purpose of explanation, has been 4stated as 140 pounds. Now, therefore, if thepressure in thetank is 140 pounds when the-'water is at its lowest level, and if the pump begins to work against that pressure, it 1s obvious that Athe pressure will increaseasfthe vwater level rises unless the carbon dioxid is absorbed by the water as fast `as the water is pumped in. An increase of pressureishoulxd be avoided, for otherwise a continual in'- crease of power would be required to operate the pump. Such increase of pressure lis avoided, `to agreat extent at least, bythe action of the fine stream of'water in pulling -the carbon dioxid below vthe vwater level.

The pull is vcontinuous while the pump is operating, and there is a continuous circulation through a part of the pipe 52, the cai-, bon dioxid passinginto the pipe through the f holes abovethe water level, and the carbonthat the medium by which the carbon dioxid is pulled down isthe fresh waterwhich'has the greater capacity toabsorb, and that the' stream of fresh water pulls more carbon dioxid than it can absorb, thus"keeping an excess of carbon dioxid 'constantly passing' `through the previously charged waterj- The operation justpdescribed causes maximum absorption of carbon dioxid as fast as ed into the fitting 45. The plug 61 is pro-4 the absorbing element is supplied, thus avoiding an' increase of pressure while the pump is operating. n n

The upper end of the pipe 58 is screwthreaded to a nipple 56, and the nipple is flanged and securely held inthe itting`45 by the union 57 which connects Vthe check valve 1,6c to the fitting 45. A strainer 58 is located in the nipple 56. A tube 59 of relatively small diameter is alixed tothe nipple 56 and conducts the water tothe nipple, 54, which, as previously explained, is provided with a nozzle for forming the fine stream vfrom time to time while the apparatus is in operation. The bore 60 communicates with the bore of a plug 61 which is screw-thread-V ortant point of thek mixing operationis ,of the tank.

vided with two outlets to one of which isf v` connected a blow-olf valve 62, and to thev otherv of which is Connected an 'automatic i, safety valve 63. The blow-off valve is in'-v 1 tended to be used to ventthe air in the tank {.70 when Athe `apparat-us is iirst putin operation, y and tovent the air which 'collects little'byv littlel while the apparatus is'in use. The

safetyvalve is' 'provided for affording relief" i' when the pressure inthe 'tankbecomes too great. The Aoutlet pipe for the carbonated water is open at thevbott'om, near the'bottoin The fitting 45' is y formed with a 'screw-L f i 'th'rea'dedn'ipple 64 whereby it is connected' soA to a vbushing 65` inthe' top of the tank. The, fitting. 45 isfals'oprovided witha fiange 66 whichfsurroundsi'a gasket 675, the gasket bei` ingused to form Vatightj'oint between theA 'fitting 45 'and the bushing' 65.V 'The bushing is formed'witha Harige 68 which lies against theinner side of the tank andjwhich is preferably Amade in two sections, l,joined as shown byy Fig;v 1.""This construction makes'l 'l tightly seated by 'a`inut69` threaded upon',l vthe bushing outside 'the tank. Thetank is 90 the flange 68 at the'V inner end of the nipple l p 65 and' to insert the nipple `through thetop pf the vtank from. the inside. 'The watersupply' pipel?) is preferably' vprovi-ded with a portionlx in the form'of ar coil or in other formfor the purpose of rendering it flexible so that Ait will not ofer any serious oppo` `sition tothe rise and fall of thepump when the support -17 is moved.

`Having thusexplai-ned .the nature of my saidinvention and' described a'way of constructing and using the y' same, althougl1 lwithout attempting to setl forth all the formsy `in which it may bemadeor lall'the modes of lits'use, "vvffhat'l claim` is? 1. In an apparatus of the character de#` scribed, a lclosed tank, means fordelivering a gaseous fluid into the same, means for dis'A charging downwardly and within said tankv a stream of Vliquid underV pressure, and a pipe disposed to surround such stream above".

and below the level of liquid inthe tank, the

internal diameter of said pipe bein 'greater than the diameter of said 'liquidi ischarg- `ing means, said, pipe` yhaving i perforations above and belowthe liquid level.

2. In'an apparatusr of thech'aracter described, a tank, a pipe extending 'up and down-therein, said pipe having perforations in'its side at 'dierent points; along its' length, means for delivering a` liquid with pressure into the upper end of' said pipe,

means for delivering a gaseous fluid into said tank, outside said pipe, and means in thenpper' part of said perforated pipe for directing downwardly a stream of Iliquidof smaller diameter than the interior of said iso pipe,`whereby the gaseous uid in said tank is drawn inwardly through the perforations abovethe liquid and downwardly through said pipe and liquid, and forced outwardly through perforations below the level of the liquid. l u

3. In an apparatus of the character described, a closed tank, means for delivering agaseous fluid into the same, means for discharging downwardly and within said tank a stream of liquid under pressure, and a pipe disposed to surround such stream Losse@ above and below the liquid level, the internal diameter of said pipe being greater than the diameter of said liquid-discharging 15 means, said pipe having perforations arranged in groups, said groups being above and below the liquid level.

In testimony whereof I have affixed my signature, in presence of two Witnesses.

k- .EDW'ARD E. MURPHY.

Witnesses:

P. W. IEzzETTI. 

